Improvement in rolling-mills



'NiTen STATES EDWIN VVASSELL, OF PITTSBURQ, PENNSYLVANIA.

IMPROVEMENT IN ROLLING-MILLS.

Specification forming part of Letters Patent No. 47,4 75, dated April 25, `1865. A

To @ZZ whom it may concern:

Be it known that I, EDWIN WAssELL, ofthe city of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Rollin g-Mills;

and I do hereby declare the following to be a full, clear, and exact description thereof, reference being hadv to the accompanying drawings, forming part of this specification, in which- Figure l is a front elevation of 'a set of rolls for rolling railroad iron,with my improvements attached. Fi g. 2 is a transverse sectional elevation through a: zr, Fig. 1. elevation ofmy improved guide-holder. Fig. 4 shows the end of the spring-rod of the guideholder. showing the mode of attaching the guide-bars thereto.

I n each of the figures like letters of reference denote similar parts.

My invention consists, rst, in an improved mode of supporting the guide-bars used in a pair or set of rolls to prevent the ironbar from windin g around the larger rolls; and, second, in a guide roller for .guiding and feeding the iron between the rolls into the proper groove.

To enable others skilled in the art to construct and use my' invention, I will proceed to describe the construction and operation of my improvement.'

In the drawings, Fig. 1 represents a set of three high rolls, as used for rolling railroadf iron, two of the gooves, numbered 2 and 3, being such as are used in the roughing-rolls for the preparatory shaping and reducing of the iron, and the groove No. l being such as is used in the finishin g-rolls. The drawings represent the rolls as partly constructed like iin ishing-rolls and partly like the roughingrolls, although in practice different sets of rolls are used for these different operations. In the tinishing-rolls one roll is grooved and the other flanged to correspond, the. iiange of one entering the groove of the other, the iron being roll-` ed between the ilange and the bottom of the This renders it necessary that the groove. gooved rolls should be of larger diameter than the flanged roll, and the consequence is a tendency in the iron which is being shaped by the rolls to remain in the groove and wind around the rolls. To remedy this guide-bars are used,

being bars of iron supported in some convenient manner by the housing and fixed horizontally at right angles to the axis of the rolls,

Fig. 3 is a sectional 3 the upper surface of the guidebars being on a i, level with the operative surface ofthe grooves formed by the rolls throughwhich the iron is passed. i

My improvement consists of a device for` supporting these guide-bars` sosituate las to be entirely out of the path ofthe bar, passing out from between the rolls and so arranged as to be capable of easy' adjustment, and to admit of the removal of the guide-bars whenever it is necessary. y i

A crossbar, a, is placed horizontallyin front of the rolls at such a height as that `the guide-a bars b b may rest against the under side ofthe i cross-bar a, while the under side `of the cross- 4bars is in the horizontaltangential line of the deepest part of the groove of the upper roll, A,

as shown in Fig. 2. These guide-bars are not` l attached to the crossbar a., but are suspended` either directly to the springrod o of the guider i l holder, as shown in Fig. 4, or to a transverse horizontal bar secured to the end of thesprin grod o when a number of gnidebars are used to one roll.

The guide-holder d (section of which is seen in Fig.- 3) consists of a, short hollow metallic cylinder, d, having a screwcap, e, at top, lthrough which is passed the pressure-screw j', the cap e, having a female `screw in which thel screw f works. works on the shaft of the screw f above the cap e, and when screwed downonthe cap serves to secure the screw f at any height at which it may be set.

a round hole in the bottom of the cylinder d, i and is furnished with a swivel, la, pivoted to i the end ofthe rod, to the two points of which, i

extending horizontallyfrom the rod c, the guide-bars b b are hooked by a loopor staple, I, in each bar. If several guide-bars are used, as is the case where more than one of the grooves in the roll Arequires to be furnished with guide'bars, a horizontal bar is similarly .attached the swivel at the end of the rod c and the guide-bars b b are hooked onto it.

The cylinder d has a iiange, j," projecting from it, which is hinged at .fr to a plate, m, and

A nut, g, or check'wheel` The end of the screwf inside the cavity of the cylinder d presses on the plate m is bolted to a bracket, u, placed on the rail or cross-bar a.v lhe object of having the hinged plate m, instead ot' bolting the cylinder by its flange directly to the bracket n, is so that, in ease of any accident by which the guidebars b b should be displaced or not used and the iron-bar should wind round the upper roll, and thus strikethe f -rward edge of the cylinder, the cylinder would rise on its hinge and make Way for the iron instead of being broken, as it would probably be if rigidly attached. It also permits the cylinder to be turned back out of the Way whenever it is desirable so to do. Y

The operation of this guide-holder is as follows: The spring-rod c being depressed by the serewf, the ends ot' the swivel le are inserted into the loops Z of the guide bars b b, which, being set in proper position, are held up to their place by the force ofthe spring 1l pressing against the button h when the screwfis raised. rlhe screw is then adjusted so as to t uch the top of the button h without depress ing it, so as to loosen the guide-bars. The cheekwheel gis then screwed down upon the cap e. i

The other feature of my improvement consists in the use of a conical tlanged guide roller p, which is placed horizontally in front of the lower pair ot' rolls B and C and turns in bearingsv q r in the housing. This guideroller is intended to bc used with roughingrolls and serves to feed the bar ot' iron which is being operated upon forward toward the rolls, and to guide it into the groove through which it is to pais. This guide-roller p is made slightly tapering, so as to facilitate the sliding of the iron bar from one groove to the other, and the flanges s being situatedexactly opposite to the flange in the rolls B and G, the bar of iron will slide down the l'ace ot1 the tapering revolving feed-roller p until it comes to the flange which guides it straight to the groove in t`1e rolls B and (J, through which it must pass.

'lhe guide-roller p is caused to revolve in the same direction as the lower roll, C, by means or" a belt (shown by a red line in Fig.

2) which passes over the pulleys t and u on the journals of the roll B and roller p. The bar of iron, being passed through the upper pair of rolls A and B, emerges over the feedroller p, the end of the iron which is to be passed back through the rolls B and C drops onto the roller p, and as the roler p is feeding the iron back toward the rolls Band O it slides down its inclined surface until it comes against the flange in front of the groove next to one side of that through which it had previously passed in the upper rolls.

Having-thus described my improvement in machinery for rolling iron, what l claim as my invention isl. The use ot' a ian ge guide-roller placed in front of a pair of rolls when such roller is tapered between the flanges, for the purpose of causing the iron bar to slide sidewise when it drops out from one pass between the rolls to the proper position in front of the next adjoining pass, substantially as described.

y EDWIN WASSELL.

Vitnesses:

W. BAKEWELL, A. S. NIoHoLsoN. 

